METHOD FOR TERMINATING HIGH FIBER COUNT CABLES

• US 20170102504A1
• Filed: 10/11/2016
• Published: 04/13/2017
• Est. Priority Date: 10/09/2015
• Status: Active Grant

• Current Assignee: CommScope Technologies, LLC (CommScope Holding Company, Inc.)
• Original Assignee: CommScope Technologies, LLC (CommScope Holding Company, Inc.)
• Inventors: Follingstad, Michael Jay
• Granted Patent: US 9,664,864 B2
• Time in Patent Office: Days
• CPC Class Codes: G02B 6/3879 Linking of individual connector plugs to an overconnector, e.g. using clamps, clips, common housings comprising several individual connector plugs
• CPC Class Codes: G02B 6/3885 Multicore or multichannel optical connectors, i.e. one single ferrule containing more than one fibre, e.g. ribbon type optical ribbon cable G02B6/4403, G02B6/448
• CPC Class Codes: G02B 6/406 of the ferrule type, connecting a plurality of pairs of ferrules
• CPC Class Codes: G02B 6/443 Protective covering
• CPC Class Codes: G02B 6/4477 with means for strain-relieving to interior strengths element

Abstract

Aspects and techniques of the present disclosure relate to a method for mating a first high fiber count optic cable including a first plurality of optical fiber ribbons with a second high fiber count optic cable including a second plurality of optical fiber ribbons. The method can include: stripping a portion of the first and second high fiber count optic cables; cutting-off each of the first and second pluralities of optical fiber ribbons at different lengths such that cut ends of each of the first and second pluralities of optical fiber ribbons are staggered relative to one another; installing a first and second plurality of multi-fiber connectors respectively on the cut ends; optically coupling the first and second plurality of multi-fiber connectors; and mounting a protective sleeve over exposed portions of the first and second pluralities of optical fiber ribbons of the first and second high fiber count optic cables.

Claims

1. A method for mating a first high fiber count optic cable including a first plurality of optical fiber ribbons with a second high fiber count optic cable including a second plurality of optical fiber ribbons, the first and second plurality of optical fiber ribbons each having individual optical fibers extending therethrough, the method comprising:

stripping a portion of the first and second high fiber count optic cables to expose the first and second plurality of optical fiber ribbons;

cutting-off each of the first and second pluralities of optical fiber ribbons, the first and second pluralities of optical fiber ribbons each being cut-off at different lengths such that cut ends of each of the first and second pluralities of optical fiber ribbons are staggered relative to one another;

installing a first and second plurality of multi-fiber connectors respectively on the cut ends of the first and second pluralities of optical fiber ribbons;

optically coupling the first and second plurality of multi-fiber connectors together via a plurality of optical fiber adapters such that the first and second high fiber count optic cables are mated together by the plurality of optical fiber adapters; and

mounting a protective sleeve over exposed portions of the first and second pluralities of optical fiber ribbons of the first and second high fiber count optic cables, the protective sleeve being secured to the first and second high fiber optic cables at respective first and second anchoring locations positioned at jacketed end portions of the first and second high fiber count optic cables.

2. The method of claim 1, wherein the protective sleeve is first mounted to the anchoring location of the first high fiber count optic cable, the protective sleeve being rolled back on the first high fiber count optic cable prior to optically coupling the first and second plurality of multi-fiber connectors to a respective one of the plurality of optical fiber adapters.

3. The method of claim 2, wherein pulling the protective sleeve over the first and second high fiber count optic cables occurs after optically coupling the first and second plurality of multi-fiber connectors to a respective one of the plurality of optical fiber adapter devices, the protective sleeve having a configuration that allows the first and second plurality of optical fiber ribbons to move relative to one another within the protective sleeve.

4. The method of claim 2, wherein the protective sleeve comprises a polymeric material.

5. The method of claim 2, wherein the protective sleeve comprises metal.

6. The method of claim 1, further comprising placing a first and second plurality of fiber expansion devices on each respective one of the first and second plurality of optical fiber ribbons to permit excess fiber length to accumulate without bending in a radius smaller than a minimum bend radius.

7. The method of claim 6, wherein each of the first and second plurality of fiber expansion devices are respectively secured together by a snap-fit connection interface.

8. The method of claim 1, further comprising securing first and second strain reliefs respectively around strength members of the first and second high fiber count optic cables.

9. The method of claim 8, wherein the first and second strain reliefs are a heat shrinkable thermoplastic strap.

10. The method of claim 8, wherein the first and second strain reliefs are a coupling nut.

11. The method of claim 8, wherein the first and second strain reliefs are mounted respectively to the first and second high fiber count optic cables by a crimping device.

12. The method of claim 8, wherein the first and second strain reliefs are each attached to the protective sleeve at first and second coupling junctions located at opposing ends thereof.

17. The fiber optic assembly of claim 12, further comprising a first strain relief secured to the at least one first fiber optic cable strength member, and a second strain relief secured to the at least one second fiber optic cable strength member.

18. The fiber optic assembly of claim 17, wherein the first and second strain reliefs are heat shrinkable thermoplastic straps.

19. The fiber optic assembly of claim 17, wherein the first and second strain reliefs are coupling nuts.

20. The fiber optic assembly of claim 17, wherein the first and second strain reliefs are mounted to the first and second fiber optic cables respectively by a crimping device.

13. A fiber optic assembly comprising:

a first fiber optic cable including a first plurality of optical fiber ribbons having ends that are each staggered relative to one another;

at least one first fiber optic cable strength member extending along the first

plurality of optical fiber ribbons;

a first jacket surrounding the at least one first fiber optic cable strength member, the first jacket being removed from an end portion of the first fiber optic cable to expose the first plurality of optical fiber ribbons and the at least one first fiber optic cable strength member;

a first plurality of multi-fiber connectors terminating a respective one of the first plurality of optical fiber ribbons that are exposed at the end portion of the first fiber optic cable;

a protective sleeve being anchored to the first fiber optic cable, the first plurality of optical fiber ribbons being free to move relative to one another within the protective sleeve;

a second fiber optic cable including a second plurality of optical fiber ribbons having ends that are each staggered relative to one another;

at least one second fiber optic cable strength member extending along the second plurality of optical fiber ribbons;

a second jacket surrounding the at least one second fiber optic cable strength member, the second jacket being removed from an end portion of the second fiber optic cable to expose the second plurality of optical fiber ribbons and the at least one second fiber optic cable strength member;

a second plurality of multi-fiber connectors each terminating a respective one of the second plurality of optical fiber ribbons that are exposed at the end portion of the second fiber optic cable;

the protective sleeve further being anchored to the second fiber optic cable, the second plurality of optical fiber ribbons being free to move relative to one another within the second protective sleeve; and

a plurality of fiber optic adapters each being coupled to a respective one of both the first and second plurality of multi-fiber connectors to provide an optical connection therebetween and to mate the first and second fiber optic cables together.

14. The fiber optic assembly of claim 13, wherein the plurality of multi-fiber connectors comprises a ruggedized MT connector.

15. The fiber optic assembly of claim 13, further comprising a first and second plurality of fiber expansion devices positioned between first and second ends of each of the first and second pluralities of optical fiber ribbons to permit excess fiber length to accumulate without bending in a radius smaller than a minimum bend radius.

16. The fiber optic assembly of claim 15, wherein each of the first and second plurality of fiber expansion devices are respectively secured together by a snap-fit connection interface.

21. The fiber optic assembly of claim 13, wherein the protective sleeve is completely sealed against the ingress of dirt and moisture.

22. The fiber optic assembly of claim 13, wherein the protective sleeve is an articulating sleeve that prevents bending in a radius smaller than a minimum bend radius such that contents of the protective sleeve are not kinked.